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(a) Differentiate between a template str...

(a) Differentiate between a template strand and coding strand of DNA.
(b) Name the source of energy for the replication of DNA

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(a) The DNA strand that has the polarity 3'`rarr` 5' acts as a template and is also referred to as non-coding. The strand which does not get transcripted is called coding strand and has the polarity `5'rarr3'`. Its sequence is same as RNA formed. The sequence of DNA located towards the 3'- end of the coding strand where the process of transcription would stop is called terminator.
(b) The source energy for the replication of DNA are the deoxyribonucleoside triphosphates that have two terminal phosphates as high energy phosphates.
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Knowledge Check

  • Differentiate between RNA and DNA ?

    A
    ribose sugar and thymine in RNA
    B
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    C
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    D
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  • If the sequence of bases in coding strand of DNA is ATTCGATC, then the sequence of bases in mRNA will be

    A
    TA A C T AC
    B
    U A A G C U A C
    C
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    D
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